To tone manga effectively as a beginner, you can start by looking at tutorials online or in books. Focus on one area at a time, like faces or backgrounds, and practice regularly. Don't be afraid to make mistakes and keep refining your skills.
Start with simple techniques like using light and shadow to create depth. Practice shading different objects to get a feel for it.
Well, for beginners, it's important to understand the basics of light sources. Observe how light falls on real objects and try to replicate that in your manga. Also, experiment with different tools like pencils of varying hardness to achieve different tones.